EP1103919A3 - Method of processing decompressed image data - Google Patents

Method of processing decompressed image data Download PDF

Info

Publication number
EP1103919A3
EP1103919A3 EP00310273A EP00310273A EP1103919A3 EP 1103919 A3 EP1103919 A3 EP 1103919A3 EP 00310273 A EP00310273 A EP 00310273A EP 00310273 A EP00310273 A EP 00310273A EP 1103919 A3 EP1103919 A3 EP 1103919A3
Authority
EP
European Patent Office
Prior art keywords
image
decompressed image
decompressed
compressed
image data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00310273A
Other languages
German (de)
French (fr)
Other versions
EP1103919B1 (en
EP1103919A2 (en
Inventor
Zhigang Fan
Ricardo De Queiroz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP1103919A2 publication Critical patent/EP1103919A2/en
Publication of EP1103919A3 publication Critical patent/EP1103919A3/en
Application granted granted Critical
Publication of EP1103919B1 publication Critical patent/EP1103919B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/007—Transform coding, e.g. discrete cosine transform

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

This invention is a method and apparatus for processing decompressed images. More particularly, this invention relates to methods and apparatus which process images without requiring information on whether the image was previously compressed or how the image was compressed. Quantization values of each image block of a decompressed image are determined a compression method used to compress a decompressed image to be processed is identified. The method and apparatus of this invention is particularly useful to determine if a decompressed image was previously compressed using a JPEG compression technique by retrieving DCT coefficients and determining quantization values to determine original DCT coefficients of a compressed and decompressed image.
EP00310273A 1999-11-23 2000-11-20 Method of processing decompressed image data Expired - Lifetime EP1103919B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US447554 1999-11-23
US09/447,554 US7187805B1 (en) 1999-11-23 1999-11-23 Maximum likelihood estimation of JPEG quantization values

Publications (3)

Publication Number Publication Date
EP1103919A2 EP1103919A2 (en) 2001-05-30
EP1103919A3 true EP1103919A3 (en) 2002-03-20
EP1103919B1 EP1103919B1 (en) 2004-07-14

Family

ID=23776809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00310273A Expired - Lifetime EP1103919B1 (en) 1999-11-23 2000-11-20 Method of processing decompressed image data

Country Status (4)

Country Link
US (2) US7187805B1 (en)
EP (1) EP1103919B1 (en)
JP (1) JP4536908B2 (en)
DE (1) DE60012113T2 (en)

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GB2387057A (en) * 2002-03-28 2003-10-01 Sony Uk Ltd Multi-generation compression using rounding effects to estimate previously used quantisation parameters
US20060182187A1 (en) * 2005-02-11 2006-08-17 Likovich Robert B Jr Automatic reconfiguration of an I/O bus to correct for an error bit
US7711199B2 (en) * 2006-03-16 2010-05-04 Samsung Electronics Co., Ltd. Method for estimating quantization factor of compressed digital image
US20070273626A1 (en) * 2006-05-04 2007-11-29 Sharp Laboratories Of America, Inc. System for pixel defect masking and control thereof
US8115506B2 (en) * 2007-05-14 2012-02-14 Applied Materials, Inc. Localization of driver failures within liquid crystal displays
JP4277055B2 (en) * 2007-05-29 2009-06-10 シャープ株式会社 Drive circuit, display device, and television system
US20080309532A1 (en) * 2007-06-12 2008-12-18 Silicon Optronics, Inc. Solid-state imaging device and method of manufacturing thereof
WO2009107469A1 (en) * 2008-02-28 2009-09-03 シャープ株式会社 Drive circuit, and display device
WO2010017845A1 (en) * 2008-08-15 2010-02-18 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for estimating the quantisation parameter used in video sequences
JP5154386B2 (en) * 2008-11-28 2013-02-27 シャープ株式会社 Driving circuit and display device
WO2012005767A2 (en) * 2010-07-07 2012-01-12 The Board Of Trustees Of The Leland Stanford Junior University A noise robust decoder for multiplexing readout channels on an imaging sensor array
RU2014132161A (en) 2012-01-05 2016-02-20 Американ Пэнел Корпорейшн, Инк. RESERVED CONTROL SYSTEM FOR LIQUID CRYSTAL DISPLAY
JP6706954B2 (en) * 2016-04-01 2020-06-10 三菱電機株式会社 Driver IC and liquid crystal display device
CN110268461A (en) 2017-02-09 2019-09-20 L3技术公司 Fault-tolerant liquid crystal display for avionics system

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Non-Patent Citations (2)

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Title
QUEIROZ DE R L: "PROCESSING JPEG-COMPRESSED IMAGES AND DOCUMENTS", IEEE TRANSACTIONS ON IMAGE PROCESSING, IEEE INC. NEW YORK, US, vol. 7, no. 12, 1 December 1998 (1998-12-01), pages 1661 - 1672, XP000786795, ISSN: 1057-7149 *
SHEN M -Y ET AL: "Review of postprocessing techniques for compression artifact removal", JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION, MARCH 1998, ACADEMIC PRESS, USA, vol. 9, no. 1, pages 2 - 14, XP002187468, ISSN: 1047-3203 *

Also Published As

Publication number Publication date
EP1103919B1 (en) 2004-07-14
DE60012113D1 (en) 2004-08-19
US20050024971A1 (en) 2005-02-03
JP2001211330A (en) 2001-08-03
JP4536908B2 (en) 2010-09-01
EP1103919A2 (en) 2001-05-30
US7187805B1 (en) 2007-03-06
DE60012113T2 (en) 2005-08-25

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